After the American Revolution, the new citizens of the United States went about the daunting task of trying to construct a republican government and culture in the 1780s and 1790s. Americans looked to the ideal of republicanism as one of the key sources of their political and cultural institutions.

A gaming app based on an infamous murder in 19th-century Boston. A week before Thanksgiving, 1849, Dr. George Parkman, one of the richest men in Boston, went missing. Professor John Webster was arrested and put on trial for the murder. A superb history game.

U.S. State and Territory Online Encyclopedias

This collection of free, authoritative source information about the history, politics, geography, and culture of the states of Alabama, Alaska, Arkansas, Connecticut, Georgia, Louisiana, Maryland, Nevada, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, and West Virginia and the territories of Puerto Rico and Guam; updated regularly to ensure that they are accurate and accessible. The editors are continually adding new entries, photographs, and maps so check back frequently to see what's new.

In August 1964, a small military engagement off the coast of North Vietnam helped escalate the involvement of the United States in Vietnam; the Vietnam War would become the longest military engagement in American history prior to the Iraq and Afghanistan wars.

In 1899 and 1900, Secretary of State John Hay issued what became known as the Open Door Notes to foreign powers involved in China. Secretary Hay called on those powers to respect the rights of each other, to agree to an open market and equal trading opportunities for merchants of all nationalities, and to respect the territorial and administrative integrity of China.